Chemistry Help! Please answer as many questions as you can! THANKS!?

Question

48. What are the characteristics of metalloids?

49. Vertical columns on the periodic table are called ____________

50. Horizontal rows are called _____________. How many are there? _________

51. Classify as a nonmetal, metal or metalloid:
a. malleable ___________ b. gains electrons ________
c. conducts heat and electricity _________ d. reacts with acid ______
e. right side of periodic table __________ f. along staircase ______

52. Name an inner transition metal

53. Drawing Atoms:
a. Draw an atom of potassium. Include protons, neutrons, electrons


b. Draw an atom of chlorine . Include protons, neutrons, electrons



54. Draw electron dot diagrams for:

Al P Se

Kr Sr Si

55. What are valence electrons?



56. How does the number of valence electrons help you determine the charge of the ion that will form? (hint: octet rule)



57. Why does the total positive charge have to match the total negative charge in an io

Answer 1

"57. Why does the total positive charge have to match the total negative charge in an io"



You're going to have to finish this question. I don't know how to answer it as it is.



51.

a. don't know. It might be metal.

b. nonmetal

c. I think this might be metal, but I don't know.

d. metal

e. nonmetal

f. metalloid



52. Copper, Titanium, Silver, Gold, etc.



I can't answer 53 or 54 on yahoo! answers. Sorry.



55. Valence electrons are the electrons in the outermost energy level or shell.



56. With ions that follow the octet rule, the charge is the opposite of the number needed to have a full outer shell of valence electrons.

For example, with Ca, which has 2 valence electrons, losing those two will result in a full outer shell. Losing two negatively charged electrons results in a 2+ charge.

Oxygen, with 7 valence electrons, needs to gain one for a full outer shell. Oxygen has a 1- charge.

Answer 2

48 showing metals and non metals natures

49 18 vertical coulmns

50 periods 7

51 A ductiles b nonmetals c metals d metals e nonmetals f metaliods

52 all the F block elements

55 outer orbit electrons

56 the number of un pair electrons is equal to its charge

57 for asalt allways total charge of cat isequal toanaion

Answer 3

49. vertical columns are called groups/families.

50. Horizontal are called periods, there are 7.